Interstitial keratitis presenting as the ocular manifestation of undiagnosed hidradenitis suppurativa.

Interstitial keratitis is defined as nonulcerative inflammation of the corneal stroma resulting from a bacterial or viral infection, parasitic antigen, or autoimmune response. Hidradenitis suppurativa is an inflammatory skin condition that presents with painful and inflamed boils in apocrine gland-bearing regions of the body, typically with onset around puberty, and ocular comorbidities exist in only a small percentage of these patients. Herein, we describe a unique ocular presentation of hidradenitis suppurativa including pronounced bilateral interstitial keratitis and association with high titer c-ANCA (antineutrophil cytoplasmic antibodies).